package com.kob.backend.service.impl.user.account;

import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.kob.backend.mapper.UserMapper;
import com.kob.backend.pojo.User;
import com.kob.backend.service.user.account.RegisterService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.security.crypto.password.PasswordEncoder;
import org.springframework.stereotype.Service;

import java.util.HashMap;
import java.util.List;
import java.util.Map;

/**
 * @author cyz
 * @version 1.0
 * @date 2023/1/13 20:48
 */
@Service
public class RegisterServiceImpl implements RegisterService {

    @Autowired
    private UserMapper userMapper;

    @Autowired
    PasswordEncoder passwordEncoder;

    @Override
    public Map<String, String> register(String username, String password, String confirmedPassword, int type) {

        Map<String, String> map = new HashMap<>();
        if (username == null){
            map.put("error_message", "用户名不能为空");
            return map;
        }
        if(password == null || confirmedPassword == null){
            map.put("error_message", "密码不能为空");
            return map;

        }

        //删掉用户名前后的冗余内容，比如制表符空格回车之类的东西
        username = username.trim();


        if(username.length() == 0){
            map.put("error_message", "用户名不能为空");
            return map;

        }

        if(password.length() == 0 || confirmedPassword.length() == 0){
            map.put("error_message", "密码不能为空");
            return map;
        }
        if(username.length() > 100){
            map.put("error_message", "用户名长度不能大于100");
            return map;
        }

        if(password.length() > 100 || confirmedPassword.length() > 100){
            map.put("error_message", "密码长度不能大于100");
            return map;
        }

        if(!password.equals(confirmedPassword)){
            map.put("error_message", "两次输入的密码不一致");
            return map;
        }

        //从数据库中找是否有相同用户名的用户
        QueryWrapper<User> queryWrapper = new QueryWrapper<>();
        queryWrapper.eq("username", username);
        List<User> users = userMapper.selectList(queryWrapper);
        if(!users.isEmpty()) {
            map.put("error_message", "用户名已存在");
            return map;
        }

        String encodedPassword = passwordEncoder.encode(password);
        String photo = "https://www.acwing.com/user/profile/index/";
        User user = new User(null, username, encodedPassword, photo, type);
        userMapper.insert(user);

        map.put("error_message", "success");

        return map;
    }
}
